黑龙江水系不同水域水质的理化特征

报道了2001年5-9月黑龙江水系不同水域理化特征和季节变化动态。结果表明:该水系不同水域水质基本处于良好状态,其透明度均值为41cm,pH均值为7.45,水呈中性,水中溶解氧丰富,水型属重碳酸盐类,钙组Ⅰ型(CCaI)和软水。水中主要营养元素含量较高,总氮均值为0.483mg·L-1,磷酸盐含量较低。水中多数理化组分在平面和季节分布上有所差异,但差异不明显。文中对水质理化特性与季节变化和主要理化指标、营养状况及其与鱼类为主的水生生物的相关性进行了讨论和评价,为发展水产业和持续利用渔业资源提供了一定的理论基础依据。

Physico-chemical characteristics of different waters in Heilongjiang system

The physico-chemical characteristics and seasonal changes of different waters in Heilongjiang system were studied from May to September, 2001. The results are as follows. Heilongjiang system has good water quality, tansparency mean 41cm, pH value 7. 45, dissolved oxygen was rich, and the water type belongs to CCa I and soft water. The contents of major nutrient elements were high, the content of TN in water was 0. 483mg#L- 1, and the content of phosphate was lower. There were hydrobgial and seasonal changes of the physico-chemical characteristics of different waters, but changes did not occur markedly. The water quality changes of different seasons and major physico-chemical factors, nutrient state and the correlation were discussed and assessed. This study provides a theoretical basis for fishery and sustainable use of f ishery resources.